Air Stagnation Advisory issued November 30 at 9:12AM PST until December 02 at 4:00AM PST by NWS
...STAGNANT CONDITIONS CONTINUE THROUGH FRIDAY MORNING... .HIGH PRESSURE OVER THE REGION WILL PERSIST THROUGH MUCH OF THIS WORK WEEK. SOME IMPROVEMENT IN AIR QUALITY WILL OCCUR TUESDAY NIGHT THROUGH THURSDAY WHEN A WINTRY MIX OF PRECIPITATION OCCURS WITH SUBSTANTIAL IMPROVEMENT LIKELY LATE THURSDAY NIGHT INTO FRIDAY WHEN A COLD FRONT PASSES THROUGH THE AREA.
Flurries and Patchy Fog
Chance Snow and Patchy Fog
Snow Likely then Wintry Mix
Slight Chance Rain